A tensioning and conveying mechanism for an insulating film in a developing machine

Abstract

The utility model relates to a developing machine technical field especially relates to a kind of tensioning conveying mechanism of developing machine inner insulating film, including bottom plate, the right side fixed connection of bottom plate top is wound up structure, the middle fixed connection of bottom plate top is guiding structure, the left side fixed connection of bottom plate top is fixed cylinder, winding structure is placed between fixed cylinder, the inside movable joint of fixed cylinder has adjusting structure.The utility model has the advantages of adjusting structure, it is favorable to adjust the tensioning of insulating film, when tension reduction, the rotational speed of unwinding drum will increase due to load reduction, so that centrifugal force increases, so that friction ring can continue to move to the inside of friction groove, to inhibit the rotational speed of unwinding drum to speed up, so that insulating film can be tightened under the driving of winding drum, otherwise friction becomes small, so that insulating film tension decreases, to maintain the stability of conveying tension;The utility model structure is relatively simple, and use cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of developing machine technology, and in particular to a tensioning and conveying mechanism for an insulating film inside a developing machine. Background Technology

[0002] In the developing process of PCB or similar industries, insulating films are usually used to cover or transport the chemicals. The insulating film needs to be continuously and stably transported in the developing machine. During the transport process, the tension of the insulating film is crucial. If the tension is too low, the insulating film will become loose and wrinkled, affecting the uniformity of the developing effect and even causing the film to wrap around the equipment. If the tension is too high, it may stretch or even break the insulating film, causing production interruption and material waste.

[0003] The existing tensioning and conveying mechanism of the insulating film in the developing machine mostly adopts a closed-loop control system consisting of a motor and a tension sensor. The sensor detects the tension of the film in real time and feeds the signal back to the controller. The controller then adjusts the torque or speed of the drive motor to achieve constant tension control. Although this solution has high control accuracy, the system is complex, costly, and requires a high level of technical expertise from the operators. Summary of the Invention

[0004] In view of this, the present invention provides a tensioning and conveying mechanism for an insulating film inside a developing machine to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: a tensioning and conveying mechanism for an insulating film inside a developing machine, comprising a base plate, a winding structure fixedly connected to the right side of the top of the base plate, a guide structure fixedly connected to the middle of the top of the base plate, a fixed cylinder fixedly connected to the left side of the top of the base plate, an unwinding structure placed between the fixed cylinders, an adjusting structure movably connected inside the fixed cylinder, the adjusting structure including a limiting sleeve movably connected inside the fixed cylinder, an outer cylinder fixedly connected inside the limiting sleeve, and a fourth gear fixedly connected to the outer side of the outer cylinder. A fixed column is fixedly connected to the side of the cylinder away from the fixed cylinder. An inclined plate is fixedly connected to the outside of the fixed column. A guide column is fixedly connected to the inside of the inclined plate. A movable block is movably connected to the outside of the guide column. A second spring is fixedly connected between the movable block and the inclined plate. A sliding column is fixedly connected between the movable blocks. A top column is fixedly connected to the end of the sliding column near the fixed cylinder. A connecting plate is movably connected to the outside of the top column. A sliding groove is provided on the side of the connecting plate near the top column. A movable column is fixedly connected to the side of the connecting plate away from the top column. A friction ring is fixedly connected to the outside of the movable column.

[0006] Preferably, the base plate includes a plate body, and the plate body has fixing holes inside.

[0007] Preferably, the winding structure includes a first support column fixedly connected to the rear right side of the top of the base plate and a connecting plate fixedly connected to the front right side of the top of the base plate. Bolts are movably connected inside the connecting plate. A second support column is fixedly connected to the top of the connecting plate. A fixing plate is fixedly connected to the top of both the first and second support columns. A motor is fixedly connected to the rear side of the fixing plate. A drive shaft is fixedly connected to the output end of the motor. A winding drum is movably connected to the outer side of the drive shaft.

[0008] Preferably, the guide structure includes a fixed frame fixedly connected to the middle of the top of the base plate. The fixed frame has movable holes on both the front and rear sides. A lifting rod is movably connected inside the fixed frame. A guide cylinder is movably connected to the outside of the lifting rod. Screw blocks are threadedly connected to both the front and rear sides of the outside of the lifting rod. An anti-slip sleeve is fixedly connected to the side of the screw block near the guide cylinder.

[0009] Preferably, the fixed cylinder includes a column fixedly connected to the top left side of the base plate, a cylinder body fixedly connected to the top of the column, a rotating shaft movably connected to the inner side of the cylinder body, a rotating block movably connected inside the cylinder body, a second gear fixedly connected to the outer side of the rotating shaft near the rotating block, a third gear fixedly connected to the outer side of the rotating shaft away from the rotating block, a limit ring fixedly connected to the outer side of the rotating block, a friction groove provided inside the rotating block near the cylinder body, a slot provided inside the rotating block away from the cylinder body, and a first gear fixedly connected to the outer side of the rotating block near the cylinder body.

[0010] Preferably, the unwinding structure includes a connecting column placed between fixed cylinders, with limit plates movably connected to both the front and rear sides inside the connecting column, a first spring fixedly connected between the connecting column and the limit plates, an insert column fixedly connected to the side of the limit plate away from the connecting column, a connecting block fixedly connected to the outer side of the limit plate, a connecting ring fixedly connected to the outer end of the connecting block, and an unwinding cylinder fixedly connected to the outer side of the connecting column.

[0011] Compared with the prior art, the present invention has the following beneficial effects: This invention, through its adjustable structure, facilitates the regulation of the insulating film tension. When the rotation speed of the take-up drum is less than that of the unwinding drum, causing a decrease in the tension of the insulating film, the rotation speed of the unwinding drum tends to increase due to the reduced load. This increases the centrifugal force, allowing the friction ring to continue moving further into the friction groove. This increases the contact area between the friction ring and the rotating block, thereby increasing the frictional force between them. This, in turn, inhibits the unwinding drum from accelerating, allowing the insulating film to gradually tighten under the drive of the take-up drum, restoring its tension. Conversely, the frictional force between the friction ring and the rotating block decreases, allowing the unwinding drum to increase its rotation speed, which in turn reduces the tension of the insulating film. This effectively maintains the conveying tension of the insulating film within a relatively stable range. The structure of this invention is relatively simple, reducing the cost of use. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the winding structure of this utility model; Figure 3 This is a schematic diagram of the guiding structure of this utility model; Figure 4 This is a cross-sectional structural diagram of the fixing cylinder of this utility model; Figure 5 This is a cross-sectional structural diagram of the rotating block of this utility model; Figure 6 This is a cross-sectional view of the unwinding structure of this utility model; Figure 7 This is a cross-sectional schematic diagram of the adjustment structure of this utility model; Figure 8 This is a cross-sectional structural diagram of the inclined plate of this utility model.

[0013] In the diagram: 1. Base plate; 101. Plate body; 102. Fixing hole; 2. Winding structure; 201. First support column; 202. Motor; 203. Fixing plate; 204. Winding drum; 205. Drive shaft; 206. Second support column; 207. Bolt; 208. Connecting plate; 3. Guide structure; 301. Fixing frame; 302. Moving hole; 303. Screw block; 304. Anti-slip sleeve; 305. Guide cylinder; 306. Lifting rod; 4. Fixing cylinder; 401. Column; 402. Cylinder body; 403. Third gear; 404. Rotating shaft; 405. First gear; 406. Limiting ring; 407. 408. Rotating block; 409. Second gear; 410. Friction groove; 5. Slot; 6. Unwinding structure; 501. Connecting post; 502. First spring; 503. Limiting plate; 504. Insert post; 505. Connecting ring; 506. Connecting block; 507. Unwinding drum; 6. Adjusting structure; 601. Outer cylinder; 602. Fixed post; 603. Inclined plate; 604. Sliding post; 605. Moving post; 606. Friction ring; 607. Limiting sleeve; 608. Fourth gear; 609. Connecting disc; 610. Sliding groove; 611. Moving block; 612. Guide post; 613. Second spring; 614. Top post. Detailed Implementation

[0014] Reference Figures 1-8This utility model provides a tensioning and conveying mechanism for an insulating film inside a developing machine: It includes a base plate 1, a winding structure 2 fixedly connected to the right side of the top of the base plate 1, a guide structure 3 fixedly connected to the middle of the top of the base plate 1, a fixed cylinder 4 fixedly connected to the left side of the top of the base plate 1, an unwinding structure 5 placed between the fixed cylinders 4, and an adjusting structure 6 movably connected inside the fixed cylinder 4. The adjusting structure 6 includes a limiting sleeve 607 movably connected inside the fixed cylinder 4, an outer cylinder 601 fixedly connected inside the limiting sleeve 607, the limiting sleeve 607 can rotate inside the fixed cylinder 4, and ensures more stable rotation of the outer cylinder 601. A fourth gear 608 is fixedly connected to the outside of the outer cylinder 601, the fourth gear 608 meshing with a third gear 403, and the second gear 408... The first gear 405 meshes with the fourth gear 608, which meshes with the third gear 403. The second gear 408 and the first gear 405 are of different sizes, ensuring that the friction ring 606 and the rotating block 407 rotate at different speeds. This ensures that the friction ring 606 can rotate relative to the rotating block 407 after entering it, resulting in a certain amount of friction between them. A fixed column 602 is fixedly connected to the side of the outer cylinder 601 away from the fixed cylinder 4. An inclined plate 603 is fixedly connected to the outside of the fixed column 602. A guide column 612 is fixedly connected inside the inclined plate 603. The guide column 612 is set at an angle. A moving block 611 is movably connected to the outside of the guide column 612. The moving block 611 can move outside the guide column 612. The moving block 611 and the inclined plate 603 are connected to the guide column 602. A second spring 613 is fixedly connected between plates 603. The second spring 613 is in a compressed state. A sliding column 604 is fixedly connected between moving blocks 611. The sliding column 604 can move inside the inclined plate 603. A top column 614 is fixedly connected to the end of the sliding column 604 near the fixed cylinder 4. A connecting plate 609 is movably connected to the outer side of the top column 614. The connecting plate 609 can move inside the outer cylinder 601. A groove 610 is provided on the side of the connecting plate 609 near the top column 614, and the top column 614 can move in the groove 610. A moving column 605 is fixedly connected to the side of the connecting plate 609 away from the top column 614. A friction ring 606 is fixedly connected to the outer side of the moving column 605. The friction ring 606 is made of rubber and has a good anti-slip effect. When the motor 202 is started, the drive shaft 205 drives the take-up drum 204 to rotate, which in turn pulls the insulating film on the unwind drum 507. The unwind drum 507 rotates passively under the tension of the film. The rotation of the unwind drum 507 causes the connecting column 501 to drive the rotating block 407 to rotate, which in turn causes the first gear 405 to rotate, which in turn drives the second gear 408 to rotate the rotating shaft 404, which in turn drives the third gear 403 to rotate the fourth gear 608, which in turn drives the outer cylinder 601 to rotate the fixed column 602, which in turn drives the inclined plate 603 to rotate. Under the action of centrifugal force, the moving block 611 can move outside the guide column 612. The movement of the guide column 612 causes the top column 614 to move in the slide groove 610.Simultaneously, the top column 614 drives the connecting plate 609 to move closer to the rotating block 407, which in turn drives the moving column 605 to allow the friction ring 606 to enter the friction groove 409. When the rotation speed of the take-up drum 204 is less than the rotation speed of the unwinding drum 507, causing a decrease in the tension of the insulating film, the rotation speed of the unwinding drum 507 tends to increase due to the reduced load, resulting in an increase in centrifugal force. This allows the friction ring 606 to continue moving into the friction groove 409, increasing the contact area between the friction ring 606 and the rotating block 407. Consequently, the friction between the friction ring 606 and the rotating block 407 increases, thus suppressing the increase in the rotation speed of the unwinding drum 507 and ensuring that the insulating film is properly supported by the belt of the take-up drum 204. The tension can be gradually restored by the winding drum 204. Conversely, when the rotational speed of the winding drum 204 is greater than that of the unwinding drum 507, causing the tension of the insulating film to increase, the load on the unwinding drum 507 increases, and its rotational speed decreases accordingly. This reduces the centrifugal force, allowing the friction ring 606 to move away from the friction groove 409. This reduces the contact area between the friction ring 606 and the rotating block 407, thereby reducing the friction between them. This allows the rotational speed of the unwinding drum 507 to increase, further reducing the tension of the insulating film. This effectively maintains the conveying tension of the insulating film within a relatively stable range. The structure of this invention is relatively simple, reducing the cost of use.

[0015] Furthermore, the base plate 1 includes a plate body 101, and the interior of the plate body 101 is provided with fixing holes 102, through which the mechanism can be fixed.

[0016] Furthermore, the winding structure 2 includes a first support column 201 fixedly connected to the rear right side of the top of the base plate 1 and a connecting plate 208 at the front right side of the top. Bolts 207 are movably connected inside the connecting plate 208. The top of the plate 101 has a threaded groove adapted to the bolts 207. Tightening in the bolts 207 fixes the connecting plate 208, and loosening them removes the connecting plate 208, thereby removing the second support column 206 and the fixing plate 203 on the second support column 206. This facilitates the extraction of the winding drum 204 from the drive shaft 205. A second support column 206 is fixedly connected to the top of the plate 208. A fixing plate 203 is fixedly connected to the top of both the first support column 201 and the second support column 206. A motor 202 is fixedly connected to the rear side of the fixing plate 203. A drive shaft 205 is fixedly connected to the output end of the motor 202. A take-up drum 204 is movably connected to the outside of the drive shaft 205. The take-up drum 204 can move back and forth on the outside of the drive shaft 205. Starting the motor 202 enables the drive shaft 205 to drive the take-up drum 204 to rotate, which facilitates the winding of the insulating film.

[0017] Furthermore, the guide structure 3 includes a fixed frame 301 fixedly connected to the top center of the base plate 1. The fixed frame 301 has movable holes 302 on both the front and rear sides. A lifting rod 306 is movably connected inside the fixed frame 301. The lifting rod 306 can be raised and lowered in the movable holes 302. A guide cylinder 305 is movably connected to the outside of the lifting rod 306. The guide cylinder 305 can rotate outside the lifting rod 306. Screw blocks 303 are threadedly connected to both the front and rear sides of the outside of the lifting rod 306. An anti-slip sleeve 304 is fixedly connected to the side of the screw block 303 near the guide cylinder 305. The anti-slip sleeve 304 is made of rubber. The guide structure 3 is used to guide the insulating film. In use, the insulating film on the unwinding structure 5 passes under the guide cylinders 305 on both sides of the guide structure 3 and above the guide cylinders 305 on the two middle guide structures 3. Then, the end of the insulating film is wound around the winding drum 204 for winding.

[0018] Furthermore, the fixed cylinder 4 includes a column 401 fixedly connected to the top left side of the base plate 1. A cylinder body 402 is fixedly connected to the top of the column 401. A rotating shaft 404 is movably connected to the inner side of the cylinder body 402, allowing rotation within the cylinder body 402. A rotating block 407 is movably connected inside the cylinder body 402, allowing rotation within the cylinder body 402. A second gear 408 is fixedly connected to the outer side of the rotating shaft 404 near the rotating block 407, and a third gear 403 is fixedly connected to the outer side of the rotating shaft 404 away from the rotating block 407. A limiting ring 406 is fixedly connected to the outer side of the rotating block 407, limiting the position of the rotating block 407. A friction groove 409 is provided on the side of the rotating block 407 near the cylinder 402. The friction groove 409 is used for the friction ring 606 to enter, and the friction ring 606 is adapted to the friction groove 409 so that the friction ring 606 can contact the inner wall of the rotating block 407. A slot 410 is provided on the side of the rotating block 407 away from the cylinder 402. The slot 410 is used for the insertion of the insert post 504. A first gear 405 is fixedly connected to the outer side of the rotating block 407 near the cylinder 402. When the unwinding structure 5 rotates, it can drive the rotating block 407 to rotate the first gear 405, which in turn drives the second gear 408 to rotate the rotating shaft 404, which in turn drives the third gear 403 to rotate the fourth gear 608.

[0019] Furthermore, the unwinding structure 5 includes a connecting post 501 placed between the fixed cylinders 4. Limiting plates 503 are movably connected to both the front and rear sides of the connecting post 501. A first spring 502 is fixedly connected between the connecting post 501 and the limiting plates 503, and the first spring 502 is in a compressed state. An insert post 504 is fixedly connected to the side of the limiting plate 503 away from the connecting post 501. The limiting plate 503 and the insert post 504 can move inside the connecting post 501. A connecting block 506 is fixedly connected to the outer side of the limiting plate 503, and a connecting ring 505 is fixedly connected to the outer end of the connecting block 506. An unwinding drum 507 is fixedly connected to the outside of the column 501. The unwinding drum 507 is used to place the insulating film. By pushing the connecting ring 505 towards the middle, the connecting block 506 can drive the limiting plate 503, which in turn drives the insertion post 504 to retract into the fixed column 602, so that the connecting post 501 can be placed between the rotating blocks 407. After being released, under the action of the first spring 502, the insertion post 504 can be inserted into the slot 410, which is convenient for fixing the unwinding structure 5. Pushing the connecting ring 505 towards the middle again will make the insertion post 504 leave the slot 410, which is convenient for disassembling the unwinding structure 5.

[0020] Working principle: When in use, starting the motor 202 causes the drive shaft 205 to drive the take-up drum 204 to rotate, which in turn pulls the insulating film on the unwind drum 507. The unwind drum 507 rotates passively under the tension of the film. The rotation of the unwind drum 507 causes the connecting column 501 to drive the rotating block 407 to rotate, which in turn causes the first gear 405 to rotate, which in turn drives the second gear 408 to rotate the rotating shaft 404, which in turn drives the third gear 403 to rotate the fourth gear 608, which in turn drives the outer drum 601 to rotate the fixed column 602. This causes the inclined plate 603 to rotate, and under the action of centrifugal force, the moving block 611 can move outside the guide post 612. The movement of the guide post 612 causes the top post 614 to move in the slide groove 610. At the same time, the top post 614 causes the connecting plate 609 to move closer to the rotating block 407, which in turn causes the moving post 605 to allow the friction ring 606 to enter the friction groove 409. When the rotation speed of the take-up drum 204 is less than the rotation speed of the unwinding drum 507, causing the tension of the insulating film to decrease, the rotation speed of the unwinding drum 507... The centrifugal force tends to increase as the load decreases, causing the friction ring 606 to continue moving further into the friction groove 409. This increases the contact area between the friction ring 606 and the rotating block 407, thereby increasing the friction between them. This, in turn, suppresses the acceleration of the unwinding drum 507, allowing the insulating film to gradually tighten under the drive of the winding drum 204, thus restoring tension. Conversely, when the rotation speed of the winding drum 204 exceeds that of the unwinding drum 507, causing the tension of the insulating film to increase, the unwinding... As the load on the drum 507 increases, the rotational speed decreases, resulting in a reduction in centrifugal force. This allows the friction ring 606 to move away from the friction groove 409, reducing the contact area between the friction ring 606 and the rotating block 407. Consequently, the friction between the friction ring 606 and the rotating block 407 decreases, allowing the rotational speed of the unwinding drum 507 to increase. This, in turn, reduces the tension of the insulating film, effectively maintaining the conveying tension of the insulating film within a relatively stable range. This invention has a simple structure and reduces operating costs.

[0021] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A tensioning and conveying mechanism for an insulating film inside a developing machine, comprising a base plate (1), characterized in that: A winding structure (2) is fixedly connected to the right side of the top of the base plate (1), a guide structure (3) is fixedly connected to the middle of the top of the base plate (1), a fixed cylinder (4) is fixedly connected to the left side of the top of the base plate (1), an unwinding structure (5) is placed between the fixed cylinders (4), an adjusting structure (6) is movably connected inside the fixed cylinder (4), the adjusting structure (6) includes a limiting sleeve (607) movably connected inside the fixed cylinder (4), an outer cylinder (601) is fixedly connected inside the limiting sleeve (607), a fourth gear (608) is fixedly connected to the outside of the outer cylinder (601), a fixed column (602) is fixedly connected to the side of the outer cylinder (601) away from the fixed cylinder (4), and an inclined plate (603) is fixedly connected to the outside of the fixed column (602). A guide post (612) is fixedly connected inside the inclined plate (603). A moving block (611) is movably connected to the outside of the guide post (612). A second spring (613) is fixedly connected between the moving block (611) and the inclined plate (603). A sliding post (604) is fixedly connected between the moving blocks (611). A top post (614) is fixedly connected to one end of the sliding post (604) near the fixed cylinder (4). A connecting plate (609) is movably connected to the outside of the top post (614). A sliding groove (610) is provided on the side of the connecting plate (609) near the top post (614). A moving post (605) is fixedly connected to the side of the connecting plate (609) away from the top post (614). A friction ring (606) is fixedly connected to the outside of the moving post (605).

2. The tensioning and conveying mechanism for an insulating film inside a developing machine according to claim 1, characterized in that: The base plate (1) includes a plate body (101), and the plate body (101) has fixing holes (102) inside.

3. The tensioning and conveying mechanism for an insulating film inside a developing machine according to claim 1, characterized in that: The winding structure (2) includes a first support column (201) fixedly connected to the rear right side of the top of the base plate (1) and a connecting plate (208) on the front right side of the top. The connecting plate (208) is movably connected with bolts (207). The top of the connecting plate (208) is fixedly connected with a second support column (206). The tops of the first support column (201) and the second support column (206) are both fixedly connected with fixing plates (203). The rear side of the fixing plate (203) is fixedly connected with a motor (202). The output end of the motor (202) is fixedly connected with a drive shaft (205). The outer side of the drive shaft (205) is movably connected with a winding drum (204).

4. The tensioning and conveying mechanism for an insulating film inside a developing machine according to claim 1, characterized in that: The guide structure (3) includes a fixed frame (301) fixedly connected to the middle of the top of the base plate (1). The fixed frame (301) has moving holes (302) on both the front and rear sides. The fixed frame (301) is movably connected to the interior of the fixed frame (301). The outer side of the lifting rod (306) is movably connected to the guide cylinder (305). The front and rear sides of the outer side of the lifting rod (306) are threaded with screw blocks (303). The screw block (303) is fixedly connected to the side of the guide cylinder (305) with an anti-slip sleeve (304).

5. The tensioning and conveying mechanism for an insulating film inside a developing machine according to claim 1, characterized in that: The fixed cylinder (4) includes a column (401) fixedly connected to the top left side of the base plate (1). A cylinder body (402) is fixedly connected to the top of the column (401). A rotating shaft (404) is movably connected to the inner side of the cylinder body (402). A rotating block (407) is movably connected inside the cylinder body (402). A second gear (408) is fixedly connected to the outer side of the rotating shaft (404) near the rotating block (407). A third gear (403) is fixedly connected to the outer side of the rotating shaft (404) away from the rotating block (407). A limit ring (406) is fixedly connected to the outer side of the rotating block (407). A friction groove (409) is provided inside the rotating block (407) near the cylinder body (402). A slot (410) is provided inside the rotating block (407) away from the cylinder body (402). A first gear (405) is fixedly connected to the outer side of the rotating block (407) near the cylinder body (402).

6. The tensioning and conveying mechanism for an insulating film inside a developing machine according to claim 1, characterized in that: The unwinding structure (5) includes a connecting column (501) placed between the fixed cylinders (4). Limiting plates (503) are movably connected to both the front and rear sides inside the connecting column (501). A first spring (502) is fixedly connected between the connecting column (501) and the limiting plate (503). An insert (504) is fixedly connected to the side of the limiting plate (503) away from the connecting column (501). A connecting block (506) is fixedly connected to the outer side of the limiting plate (503). A connecting ring (505) is fixedly connected to the outer end of the connecting block (506). An unwinding cylinder (507) is fixedly connected to the outer side of the connecting column (501).

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